As the global climate changes, millions of people will be uprooted by sea-level rise, extreme weather events, droughts and water scarcity, says Annegret Kapp. It is vital to start talking about our moral, legal and practical obligations to them.

The mainstream media, not least the BBC, has lapped up Gordon Brown's gaffe over the voter he called bigoted yesterday. But its portrayal of the incident has much more insidiously 'normalised' anti-immigrant prejudice - and that is not being talked about. It should be.